Improvement in center plates for stove-tops



J. THORNILEY.

Stove-TopPlaJte N0.10-7,566. Patented Sept. 20, 1870.

I ,ZFzrmfar' N. PETERS. PHOTO-LITNOGRAPIIBR. WASHINGTON n c.

dished fitme- JOHN THOR-NILEY, OF FALIiSTO-N, PENNSYLVANIA.

Letters Patent No. 107,566, dated September 20, 1870.

IMPROVEMENT m CENTER emu-Es r'oR STOVE-TOPS.

The Schedule referred, to in these Letters Patent; and making part-ofthe same To all whom it may concern.-

Be itknown that I, J 011x TnonxILnY, of Fallston, in the connty ofBeaver and State of Pennsylvania, have invented a new and usefulImprovement in Center Plates. for Stove-Tops; and I do hereby declarethat the following is a full, clear, and exact descriptionthereofireference beinghad to the accompanying dra'wingand to theletters of reference marked thereon.

I The nature of my invention consists in providing the center pieces ofstove-tops with a catch and' latch, and. so constructing the centerpiece or pieces A represents the top of a cooking-stove, and is of"ordinary construction I B reprcsentsthe short center pieces; and

C the long center piece, which is provided with a' catch orlug, D, and alatch or pivoted button, e; by

means of this latch and catch, or lug, the center piece 0 is held to itsbed in the stove-top A, which, to a very great degree, prevents thecenter piece from warping by the action of the heat of the stove.

In placing the center piece in its position in the stovc-top, the recessof the catch or lug D is placed over the flange 0, as shown in fig. 2;and the pivotcd button or latch is turned under the flange n of the top.1

The lower side of the center piece 0 is provided with "two flanges, ff,which project downward, and gradually diminish from each and toward thecenter of the center piece. These flanges ff prevent-the warping of thecenter piece by compensating for the, difference in contraction of. itin cooling, after being heated; and also cause the center piece tograduall and equally cool off. I

:1; represents a support for the center of the center piece. Thissupport is of ordinary construction, and

a common appendage to long center pieces.

It-will be observed that the thinnest portions of the center piece: O:are on each side of the supportx,

and are between'it and the flanges f f, so that'it will be almostimpossible for the center piece to warp,-

either in heating or cooling off. This facthas been demonstrated by'many trials and experiments made by me. Y

Having thus described the nature, construction,

and operation of my improvement,

What I claim as of my invention, is-- "A center piece for a stove-top,provided with a catch or lug, and pivoted or sliding catch arranged andoperating with relation to the top, substantially as herein described,and for the purpose set forth.

- JOHN THORNI'LEY.

Witnesses:

' ADAM O. Jons'sros, JAMES J. J onss'rox.

ween e.

